Hi, I'm new to the forums and I just started firing my C9 today. I bought it two weeks ago and have left the magazine loaded since then. After I fired the first round it seemed the C9 didn't cycle and recock. I tapped it on the back and it fired the next round. I would do this again for the next two rounds. I eventually figured out that if I only loaded 5 rounds in mag it would cycle, but anymore and it wouldn't recock. Am I correct in assuming that this is a mag spring issue and it just needs to be broken in over time?